

Command Reference 2.  FPGA Express Shell Commandsset_module_primitive


_N_A_M_E
          set_module_primitive
                         Specify primitive option for
                         optimization.


SYNTAX
          string set_module_primitive
                 {_p_r_e_s_e_r_v_e | _o_p_t_i_m_i_z_e | _i_n_h_e_r_i_t}
                 _m_o_d_u_l_e__l_i_s_t

         list _m_o_d_u_l_e__l_i_s_t


ARGUMENTS
          _p_r_e_s_e_r_v_e       When this option is set, the existing
                         technology specific primitive cells in
                         the modules on the _m_o_d_u_l_e__l_i_s_t will be
                         preserved.  Only one of "preserve",
                         "optimize", or "inherit" can be
                         specified.


          _o_p_t_i_m_i_z_e       When this option is set, the existing
                         technology specific primitive cells in
                         the modules on the _m_o_d_u_l_e__l_i_s_t are
                         unmapped and re-optimized in combination
                         with the surrounding logic.  Only one of
                         "preserve", "optimize", or "inherit" can
                         be specified.


          _i_n_h_e_r_i_t        When this option is set, each module
                         inherits the primitive option of its
                         parent module. This is the default.
                         Only one of "preserve", "optimize", or
                         "inherit" can be specified.


          _m_o_d_u_l_e__l_i_s_t    List of modules to which to apply the
                         specified primitive control attribute.


DESCRIPTION
          This command sets the primitive options for modules
          named in _m_o_d_u_l_e__l_i_s_t.  It controls how existing target
          primitive cells are treated during optimization. The
          default value is set to _i_n_h_e_r_i_t.


v3.0      Synopsys Inc. 1988-1998. All rights reserved.       2-1


set_module_primitiv2e.  FPGA Express Shell Commands  Command Reference


EXAMPLES
          In this example, The design consists of a top-level
          module (/test1), and three sub-modules /test1/C1,
          /test1/C2, and /test1/C3.

          To preserve primitives for ALL modules, it is enough to
          set the _p_r_e_s_e_r_v_e at the top level, since all subsidiary
          modules will inherit the option.

               fe_shell > set_module_primitive _p_r_e_s_e_r_v_e /test1

          To preserve the primitives in just a few specific
          modules, they must be individually listed.

               fe_shell > set mod {/test1/C1 /test1/C3}
               /test1/C1 /test1/C3
               fe_shell > set_module_primitive _p_r_e_s_e_r_v_e $mod


SEE ALSO
          set_chip_primitive(2)


2-2       Synopsys Inc. 1988-1998. All rights reserved.      v3.0